Duplex rotary blower.



10.891,372. I EATENTED JUNE z3, 1903.

' E. E. EEIGEHEEM.

DUPLEX EOTAEY ELoWEE. APPLICATION FILED APB.. 15, 1905.

3 SHEETS-SHEET -;1.

PATENTED JUNE 23, 1908.V

E. P. REIGHHELM. DUPLEX RUTARY BLOWER. MPLIGATION PILED M315, 1905.

3 SHEETS-SHEET 2.

@KRW/Leases PATENTED JUNBZS, 1908.

APPLICATION FILED APR.15. 1905.

E P REIGHHELM -l DUPLEX ROTARY BLOWER.

wit/m ooe'o EDWARD P. REICHHELM, OF BAYONNE, NEW JERSEY.

- DPLEX ROTARY BLOWER.

Specification of Letters Patent.

` Patented June 23,1908.

Application filed April 15, 1905.A Serial N o. 255,731.

To all whom it may concern."

. Be it knownthatl I, EDWARD P. REICH- HELM, a citizen of the U resident of Bayonne, in the county of Hudson and State f New Jersey, have invented certain new and useful Improvements in piston.

' latter are fastened the bladesF, that fit be- .section of Fig. 3 on the Duplex Rotar Blowers, of which the following isa speci cation.. Y

This invention relates to duplex rotary blowers. Its organization comprisesl a housing or cylinder, having inletand outlet openings, a shaft arranged to rotate in the cylinder, blades lsecurelyfastened to the shaft, a segmental piston actuated bythe blades, a main working chamber on'th'e outside, anda secondary working chamber on Vthe'inside of the piston.

Referring to the drawings, Figure l represents an elevation of the atop plan view of Fig.

1,' Fig. 3 is a section of Fig. 2, on the line'fr,

x, Fig. 4 represents a line x, Fig. 5 shows a section of Fig. 2 on the line m2, 062, F ig. 6 is an. enlarged ton of the blower,' Fig. 7 shows a partial elevation and section of one of the segments or members of the piston, and Fig. 8 represents a partial elevation of another member of the The duplex'blower is shown to comprise the housing or cylinder A, with the inlet opening a, and outlet opening a, and carried on a suitable support or foot A. To the sides of the cylinder are bolted thecylinder heads'B and C. In .the head B are formed the secondary inlet opening B and secondary outlet opening B2, the walls of both openings extending beyond the main head-B, and arranged for connecting piping therewith. The heads B' and C contain respectively the annular grooves b and c, which are eccentric with the axis of the cylinder, and journal .bearings b and c extend from the heads.

In the bearings b and c is supported the shaft D, to which is tightly secured the spider E with the forked arms e, in which tween the walls ofthe cylinder. The annular groo'ves Z) and c in'close and guide eccentrically with the axis of the cylinder, the ends of-a segmental piston G, which in the drawings is shown to consist of the four segments or members designated by G and G2. segments G havslots m and are reinforced the segmental ends g, joined by the rein-v nited States, and a blower, Fig. 2 shows `inner working chamber 2 on cross-section of the pis-` portion of the 4which Thev forcing bars g', which latterhave slots g2 that are concaved for the pins H, that also have slots 7a The slots in the pins H span the, distance between the adjacent faces of the segmental ends g, which faces are in the same planes as the inner faces of the cylinder heads. The segments G2 lhave slots n and have Vextending therefrom or connected thereto reinforcing bars I with the concaved slots i for the'pins H, similar to thepins H. The bars I extend the whole lengths of the segments G2, and their end faces reach'to the bottom faces of the said annular grooves. The sides of the segments overlap-each other in all the positions of the piston.

By the disposition of the parts a duplex rotary blower is obtained, with a-main or outer working chamber 1 in the cylinder on theoutside of the piston, and a secondary pr the inside of sald piston. The secondary outlet opening B2 of the secondary chamber 2, is connected by the piping with the pipin'g K, extending Y from the main workin chamber l, and a pulle L'to drive the b ower is mounted on haft D.

When operating lthe duplex blower the shaft D is rotated in the direction ofthe arrow (Fig-l), and the blades F drive the segmental piston G, about its axial center, takin the in et opening a, pocketing the charge between a pair of the b ades F at the upper portion of the main working chamber l, and discharging it through the outlet opening a. into the piping K and at the same time air or other vapor is drawn through the secondary inlet opening B pair of blades at the lowerV portion of the piston, and `discharged through the secondary outlet opening B2 Whenthe piston rotates on its axia center the chambers or pockets inclosed between the segments and .blades change in capacity and volume during the revolutions of the blower. lThe chamber inin air, vapor or ,other iiuid through pocketed'between a ,f

into the piping J, which in the drawings :1s shown connected with the voutletfpiping K.

closed between the blades and the segments,

when at the lowest position is at its maxi- ,mum' volume, and as the shaft. turns in the direction of the arrow, the chamber decreases as shown at Sand .4, the' result of secures a compression in the piston of the air or`vapor. Centrifugal forces tend to maintain th'e segments of the piston G where vthey overlap in contact 'with each other, and

force them to hug theouter walls of the annular grooves. in the heads, preventing leakge between the main and secondary chamers. The-pins H and H1closely fit the blades'F to also prevent leakage between the main and secondary working chambers. f The said pins with thelr appurtenances form joints, to allowthe, blades F to assume the necessary angular positions through the segments of the piston, when the shaft D is rotating,

Having described my invention, I claim: 1. ln a blowerthe combination of a cylinder, a segmental piston in the cylinderand eccentric with the axial line thereof, the seg- -ments ofthe piston overlapping each other, and two'working chambers in the cylinder independent of each other.

' der, cylinder having annula 2. In a blower the combination of a cylinder, a segmental piston therein located eccentrically'with the axial line thereof, the sides of the segmental piston overlapping each otherL a working chamber in the cylinder on the outside of the piston, and a working chamber on the inside of the piston.

3. In ablower the combination of a cylinder, a shaft arranged to rotate therein, blades extending from the shaft and securely connected therewith, a segmental piston in' the cylinder and eccentric therewith, the segments of thepiston with their sides. overlapping each other, and having openingsfor the blades to pass therethrough.

4. ln a blower the combination of a c'ylinheads connected thereto and `r grooves eccentric with the cylinder, -bearings in the cylinder heads, a shaft supported in. the saidhearings, blades securely connected with the shaft and extending to the walls of the cylinder, a segmental piston with its ends guided in the said annular grooyes, and the sldes of the segments of the piston overlapping each other,

. and having openings for the blades to -pass therethrough. y Y

5. ln a blower the combination of a cylinder, a shaft arranged to rotate therein, a segmental piston in the cylinder and eccentric therewith, segments of the piston with their sides overlapping eachother and havingslots, relnforcing ybars extending from the said segments and having concaved-slots, pins havin slots fitting the concaved slots of the rem orclng bars and fornung joints, bladesselet openings'leading to the inside tion of a cylinder,

curely connected with the shaft of the blower and passing through the slots ofthe pins and thexslots of the segments, and extending to the inner .faces of the walls of the cylinder.

6. In a blower the combination of a cylinder, cylinder heads thereon having annular grooves eccentric with the axis of the cylinder, a segmental 'piston in the cylinder with itsends' extending into the annular grooves of the heads, bearings in the heads, Va .shaft supported in the bearings,"joints having slots in the segmental pistons, blades securely fastened to the shaft, and extendingthrough the slots in thejoints of the segmental piston to the walls ofthe cylinder, inlet and outlet openings in the cylinder outside of the segmental piston, and secondary inlet and outof the segmental piston.

7. In a duplex rotary blower the combinaa segmental piston eccentrically located therein, a shaft arranged to rotate in the cylinder, bladesextending from the shaft and extending to the wallsof the cylinder through openings in thev segmental piston, a working chamber on the inside of the piston, a working chamber on the outside thereof, inlet and outlet openings for each chamber.

8. ln a duplex rotary blower -th'e `combination of a'cyhnder, a segmental piston eccentrically located therein, segmental ends on a pairof the members of the piston, cylinder heads bolted to the cylinder and having -annular grooves eccentric therewith, forming guides for the ends of the piston, joints in the members of the piston,`a main working chamber in the cylinder outside of the piston, and a secondary working chamber inside of the piston, a shaft arrangedto rotate in the cylinder, a spider secured to the shaft, blades fastened to the spider passing through the.

joints in the pistonV walls of the cylinder, the piston in the annular grooves, inlet and chamber.

Signed at New York, in the county of New ,York and State of New York this 6th day of April A. D. 1905.

EDWARD P. REICHHELM. Witnesses:

-ALBERT M. LEIBMAN, Louis ScnULMEnrcH.

and extending to the t and an an outlet opening for each working and arranged to turn 

